//
//  UserAccount.swift
//  基于Swift的微博设计与实现
//
//  Created by 张源海 on 15/11/25.
//  Copyright © 2015年 张源海. All rights reserved.
//
import UIKit
/// 用户账户模型
class UserAccount: NSObject{
    /// 用于调用access_token，接口获取授权后的access token
    var access_token: String?
    /// access_token的生命周期，单位是秒数
    /// 一旦从服务器获得过期的时间，立刻计算准确的日期
    var expires_in: NSTimeInterval = 0 {
        didSet {
            // 计算过期日期
            expiresDate = NSDate(timeIntervalSinceNow: expires_in)
        }
    }
    
    
    /// 过期日期
    
    var expiresDate: NSDate?
    
///  当前授权用户的UID
    
    var uid: String?
///  用户昵称
    var screen_name: String?
///  用户头像
    var avatar_large: String?
    
    
    init(dict:[String: AnyObject]) {
        super.init()
        
        
        setValuesForKeysWithDictionary(dict)
    }
    
//    override  func setValue(value: AnyObject?, forKey key: String) {}
    
    override func setValue(value: AnyObject?, forUndefinedKey key: String) {    }
    
    override var description: String{
        
        let keys = ["access_token","expires_in","expiresDate","uid","screen_name","avatar_large"]
        
        return dictionaryWithValuesForKeys(keys).description
    }
//     func saveUserAccount() {
///// 保存当前对象
//    var path = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true).last!
//    
//    path = (path as NSString).stringByAppendingPathComponent("account.plist")
//    // 在实际开发中，一定要确认文件真的保存了！
//    print(path)
//    
//    // 3. 归档保存
//    NSKeyedArchiver.archiveRootObject(self, toFile: path)
//    }

/// MARK:  键值的归档和解档
///  归档
/// - parameter aCoder:
func encodeWithCoder(aCoder: NSCoder) {
    
    aCoder.encodeObject(access_token, forKey: "access_token")
    aCoder.encodeObject(expiresDate, forKey: "expiresDate")
    aCoder.encodeObject(uid, forKey: "uid")
    aCoder.encodeObject(screen_name, forKey: "screen_name")
    aCoder.encodeObject(avatar_large, forKey: "avatar_large")
}
required init?(coder aDecoder: NSCoder) {
    
    access_token = aDecoder.decodeObjectForKey("access_token") as? String
    expiresDate = aDecoder.decodeObjectForKey("expiresDate") as? NSDate
    uid = aDecoder.decodeObjectForKey("uid") as? String
    screen_name = aDecoder.decodeObjectForKey("screen_name") as? String
    avatar_large = aDecoder.decodeObjectForKey("avatar_large") as? String

    }
    
}
// 在 extension 中只允许写 便利构造函数，而不能写指定构造函数
// 不能定义存储型属性，定义存储型属性，会破坏类本身的结构！
extension UserAccount{
    
}
